Alloy 20 Flanges

Precision-crafted for superior chemical and corrosion resistance, Alloy 20 Flanges are engineered from a nickel-iron-chromium alloy enriched with copper and molybdenum, designed to resist sulfuric acid, chloride, and aggressive chemical environments. Recognized for their high tensile strength, excellent weldability, and oxidation resistance, these flanges deliver exceptional performance in industries where chemical stability and durability are vital. Their versatility and longevity make them a reliable choice for chemical processing, pharmaceuticals, food industries, and power generation systems, where safe, leak-proof connections ensure continuous operations with minimal maintenance.

Alloy 20 ring type joint flanges are widely used by oil & gas companies, refineries, and pressure system designers who require secure, high-pressure sealing in critical applications such as pipelines, reactors, and condensers. Alloy 20 orifice flanges are favored by chemical and petrochemical engineers for flow measurement and control in acid processing lines and fluid monitoring systems. Meanwhile, alloy 20 plate flanges are preferred by fabrication contractors and industrial equipment manufacturers for low-pressure assemblies, water treatment systems, and heat exchanger setups. Across industries, these flanges ensure corrosion resistance, precision alignment, and long-term service reliability in demanding process environments.

Alloy 20 spectacle blind flanges are essential for maintenance engineers, process operators, and plant technicians who need easy isolation of piping sections during system inspection or shutdowns. They are widely used in chemical plants, offshore platforms, power generation units, and fertilizer industries, where safety, corrosion resistance, and operational flexibility are critical. These flanges allow temporary or permanent pipeline sealing, ensuring zero leakage and enhanced system control. Overall, alloy 20 flanges represent the perfect blend of strength, chemical stability, and precision engineering, making them a trusted solution for industries managing aggressive fluids and corrosive media under varied operating conditions.

Alloy 20 Flanges Equivalent Grades

STANDARD	UNS	WNR.	EN	AFNOR
Alloy 20	N08020	2.4660	NiCr20CuMo	Z2NCUD31-20AZ

Carpenter 20 Slip On Flanges

Alloy 20 SORF Flanges, UNS N08020 Slip On Flanges, DIN 2.4660 SORF Flanges, ASME SB 363 Alloy 20 Slip-on Raised Face Flanges

Alloy 20 Weld Neck Flanges

ASME SB363 Alloy 20 WNRF Flanges, ASTM B363 Alloy Gr 20 Weld Neck Flanges, DIN 2.4660 Weld Neck Flanges, UNS N08020 Weld Neck Raised Face Flanges

Carpenter 20 Blind Flanges

ASTM B363 Alloy 20 Blind Flanges, UNS N08020 / DIN 2.4660 Blind Flanges, ASME SB363 Alloy 20 BLRF Flanges, Gr 20 Alloy Blind Raised Face Flanges Supplier

Alloy 20 Threaded Flanges

DIN 2.4660 Threaded Flanges, UNS N08020 Screwed Flanges, ASME SB 363 Alloy Gr 20 Threaded Flanges, ASTM B363 Alloy 20 Threaded Flanges

Carpenter 20 Socket Weld Flanges

ASTM B363 Alloy 20 Socket Weld Flanges, Alloy UNS N08020 Socket Weld Flanges, Alloy DIN 2.4660 Socket Weld Flanges

Alloy 20 Lap Joint Flanges

UNS N08020 Lap Joint Flanges, Alloy 20 Lap Joint Flanges, ASTM B363 Carpenter 20 Lap Joint Flanges, ASME SB363 Alloy 20 Lap Joint Flanges

Alloy 20 Ring Type Joint Flange

UNS N08020 Ring Type Joint Flange, ANSI B16.9 Alloy 20 RTJ Flanges, ASTM B363 Alloy 20 Ring Type Joint Flanges, ASME SB363 Alloy 20 Ring Type Joint Flanges

Alloy 20 Orifice Flanges

UNS N08020 Orifice Flanges, B16.36 Alloy 20 Orifice Flanges, ASTM B363 Alloy 20 Orifice Flanges, ASME SB 363 Carpenter 20 Orifice Flanges

Alloy 20 Long Weld Neck Flanges

UNS N08020 Long Weld Neck Flanges, Alloy 2.4660 Long Weld Neck Flanges, ASTM B363 Alloy 20 Long Weld Neck Flanges, ASME SB 363 Alloy 20 Long Weld Neck Flanges

Alloy 20 Spectacle Blind Flanges

UNS N08020 Spectacle Blind Flanges, ANSI / ASME B16.9 Alloy 20 Spectacle Blind Flanges, ASTM B363 Alloy 20 Spectacle Blind Flanges, ASME SB 363 Alloy 20 Spectacle Blind Flanges

Alloy 20 Forged Flanges

UNS N08020 Forged Flanges, B16.9 Alloy 20 Forged Flanges, ASTM B363 Alloy 20 Forged Flanges, ASME SB363 Alloy 20 Forged Flanges

Alloy 20 Plate Flanges

UNS N08020 Plate Flanges, ANSI B16.9 Alloy 20 Plate Flanges, ASTM B363 Alloy 20 Plate Flanges, ASME SB363 Alloy 20 Plate Flanges

Alloy 20 Flanges Specification :

ASTM B363 / ASME SB363

Dimension Standard :

ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

Standard :

ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Size :

1/2" (15 NB) to 48" (1200NB)

Class / Pressure :

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type :

Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

DIN Flanges :

DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673.

JIS Flanges :

JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K

BS Flanges :

BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.

Chemical Composition of Alloy 20 Flanges